import numpy as np
arr1 = np.array([[10,20,30],[40,20,60]])
arr2 = np.array([1,2,3])
print('arr1与arr2相加:\n',arr1+arr2)
arr3 = np.array([[1],[2]])
print('arr1与arr3相加：\n',arr1+arr3)
arr4 = np.array(5)
print('arr1与arr4相加：\n',arr1+arr4)